Window.



No. 659,037. Patented Oct. 2, I900.

A. McKINNON.

WINDOW.

I (Application filed Feb. 24, 1900.) (No Model.) 3 Sheets-Sheet 1. JV

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Patented Oct. 2, I900. A. McKlNNUN.

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'(Applicafion filed Feb. 24, 1900.)

3 Sheets-Sheet 2.

(No Model.

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No. 659,037. Patented 00b2, [900.

A. MCKINNON.

. WINDOW.

(Applica.tion filed Feb. 24, 1900.) (No Model.) 3 Sheets-Sheet 3.

UNITED STATES PATENT OFFICE.

ARCHIBALD MCKINNON, OF GLASGOW, SCOTLAND.

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SPECIFICATION forming part of Letters Patent No. 659,037, dated October 2, 1900.

Application filed February 24:, 1900. Serial No. 6.34-3- (No model.)

To all whom, it may concern:

Be it known that I, AROHIBALD MOKINNON, joiner, a-subjeet of the Queen of the United Kingdom of Great Britain and Ireland, residing at 53 Benview street, Glasgow, Scotland, have invented new and useful Improvements in and Relating to Windows,.of which the following is a specification.

This invention relates to improvements in or connected with windows, and has for its objects to enable the sashesto beheld in their open and closed position without the use of the usual counterbalancing-weights, to enable the sashes to be removed inward from the easement and reversed to facilitate the cleaning and repairing of same, and also to fix the window-sash at any given height to prevent, for example, the inmates of asylums from fully opening a window.

In order that my said invention may be readily understood and easily carried into effect, I will proceed to describe the same with reference to the accompanying drawings, in which- Figure l is an elevation, partly in section, of a window frame or casement embodying my improvements. Fig. 2 is a cross-section of same. Fig. 3 is a part-sectional elevation showing the sashes removed from the casement and in the act of being reversed for cleaning or other purposes. Fig. 4. is a plan, and Fig. 5 a cross-section, of same. Figs. 6 and 7 are elevation and plan, respectively, of a modification. Fig. 8 is a front elevation, partly in section, illustrating another modification. Fig. 9 is a vertical transverse section of the same.

Referring to Figs. 1 to 5 of ,the said drawings, I employ a rope A at each side of the window, one end of which is attached to the lower sash B, While the other, after passing over a pulley O, is attached to the upper sash D. The weight of the one sash therefore balances that of the other and keeps them in their desired position without the use of connter-- balancing-weights. In order that the top sash D may be lowered without opening the bottom sash, the rope A in place of being connected direct to the sash-stile is attached to the end of a rod or bar E, mounted in guides e within the usual recess for the cord. The said rod or bar is so mounted that it can slide up when released by the spring-actuated catch 6', operated from within the room by a suitable knob, and thus give an increased length of rope, to the extent of which the upper sash can be lowered. A series of notches or re- .cesses 6 may be formed or provided in the window so that the sashes can be removed and reversed are each preferably carried by a rod G, the one end of which is arranged vertically above the parting-bead J, While the other is set at a distance to the side of the said bead. The one carrying-rod is thus arranged in a manner the reverse to that of the other, as shown more particularly in Fig. 4..

In removing the sashes from the easement the batten-rods H are first taken out and for this purpose are removably connected to the casement by any means similar to those at present in use. This releases the front or lower sash. To release the outer or upper sash, I arrange the parting-beads J. so that they can be slightly elevated and then moved sidewise into a recess j, where they are retained by one or more dowels or pinsj engaging with notches 7' formed in the partingbeads. The elevation of the beads may be performed before the front or lower sash is released by engaging the point of a small pivoted catch or snib K with a slot or recess 70, formed in the front of the bead, and then raising the sash. The bead is shown flush with the pulley-stile in Figs. 3 and 4. The lintel L, carrying the top parting-bead Z, is hinged to the casement, so that when the two sashes are opened it can be lowered to the position shown in Figs. 3 and 5. Both sashes are then free to be drawn into the room and reversed, the pulleys C in this operation traveling from the one end of the rods G toward the other.

LOO

4, to allow the pulleys to pass each other, and the one end is made square where it passes through the link M to prevent them turning. The respective rods are also preferably tapered toward one end, as shown, to facilitate the return of the pulleys to their normal position, or may be tapered in the reverse direction to further facilitate the travel first described, while the ends after passing through the link M are fitted within curved slots, de-

scribed with m as center, so that the weight is borne directly by the plate g, as shown in the several figures. The tilting of the rods may be caused by the travel of the pulleys C thereon or may be effected or aided by extending the pivot on rearward and fitting it with a small arm or crank N, operated by a wire or rod it through a handle or knob (not shown) arranged within the room.

When chains are employed in lieu of ropes for hanging the sashes, I may, as a modification, dispense with the two rods G and substitute therefor a single red P, Figs. 6 and 7, which is preferably tapered from the ends toward the center, where it is formed with a double knee or elbow p for the reception of the pulleys. This provision is rendered necessary, owing to the greater resistance ofiered by the chain to twisting. The rod is also so formed that the two halves, as well as being tapered,form one horizontal line in elevation, which is on the under side when it is desired to draw the pulleys toward the center, as shown in the figures, but is on the upper side when the pulleys are put to their normal use.

To allow the sash to be raised to any desired extent and fixed so that it cannot be further raised without the aid of a key or similar instrument, I secure at the lower end of the rabbet R in the pulley-stile a notched rack R, into which the bolt 8 of a lever S, pivoted at 8 within the window-sash, engages. By means of a key, therefore, the bolt can be withdrawn and the sash raised, when the bolt, being released, engages with one of the said notches and fixes the sash in that position. The arrangement of the notches allows the sash to be closed without the aid of the key, the bolt withdrawing itself automatically against the influence of the spring 3 which normally repels it outward.

The foregoing serve as examples of how my invention may be carried into effect; but I desire it to be understood that the means employed may be varied without departing from the scope of my invention, as, for example, I may utilize the ordinary pulleys at present in use for passing the rope of the sashes over the loops so formed toward the lower art of the casement, being passed undera third pulley carried upon a sliding rod similar to that described and shown applied to the sash-stile, arranged behind the pulley-stile,and actuated in a manner also similar to that described. In this modification, which is illustrated in Figs. 8 and 9, the sash-cord A is, as before described, connected at its respective ends to the lowersash B and upper sash D, but passes over ordinary sash-pulleys C, mounted on fixed bearings in the easement, from which pulleys the central part of the cord descends in a bight or loop within the easement and passes around a pulley C running in a yoke E on the extremity of a vertical rod E, which slides end wise in guides E fixed in the frame. A spring F tends to force the rod E downward in normal position; but when the said rod is free to move and suflicient force is applied the upper sash may be moved without ino'vi'ng the lower one. To retain the sliding rod E in any position of adjustment, a pin R is provided, passing through an aperture 6 in one of the guides E and into one of a series of holes 6 in the sliding rod E. S represents a spring tending to force the pin R forward into engagement with the rod E. r is a knob on the extremity of the pin R Within the room for the purpose of retracting it. When the rod E is drawn up to its full extent and there held by the pin R, sufficient lengthening of the cord is provided to permit the easy reversal of the sashes when drawn forward out of the frame.

I claim- 1. The combination of a pair of sliding window-sashes, cords or chains connecting said sashes and passing over sheaves whereby the said sashes are made to mutually counterbalance each other, a sliding rod connected with each of said cords and a take-up spring and detent connected with the sliding rod whereby the cords are normally retained in proper length to cause the movement of one sash to impart equal movement to the other in the opposite direction or the said cords may be lengthened to permit the movement of one sash without the other or facilitate their removal from the frame and reversal in posisition, as explained.

2. The means whereby the upper sash can be lowered without raising the lower sash, consisting of a sliding bar, to which one end of the rope is attached, recessed within the lower sash-stile and controlled in its movement by a spring-actuated catch, whereby-an amount of slack rope is obtained the extent of which determines the extent of lowering of the upper sash, substantially as hereinbefore described and shown in the accompanying drawings.

3. The combination with a sliding lower sash of a sliding upper sash connected to the former by a rope at each side passing over pulleys, in the upper part of the easement, which are capable of sliding from side to side of said casement, a top lintel carrying the top batten-rod and parting-bead hinged to the said casement, side parting-beads of a wedgeshaped cross-section arranged in similarlyshaped recesses in the pulley-stile, and dowelpins secured within said recesses adapted to enter notches in the back of said partingbeads when raised and retain them flush with the pulley-stile and for guiding the partingbeads outward into their normal position when lowered, su bstantially as described and shown. I

4. The means for enabling the sashes to be removed from the casement, and reversed for cleaning and repairing purposes, consisting of the rods G carrying the cord-pulleys, c011- structed and arranged as described, and having at their ends the pivoting-links M whereby the said rods can be inclined to allow the pulleys to travel therealong, substantially as hereinbefore described and shown in the accompanying drawings.

5. The combination of a sliding sash D a parting-bead J guiding the said sash in its ARCHIBALD MOKINNON.

Witnesses:

WILLIAM EASTON, FREDERICK LISTER MATHESON. 

